United States · 
What does Prolog Ventures invest in?
Prolog Ventures invests most often at Venture and Series A (57% of the rounds on record), in sectors such as Network Security, Security and Venture Capital & Private Equity.
Prolog Ventures highlights
- 01
41 rounds on record
- 02
Mostly Venture and Series A: 57% of its rounds
- 03
Sole investor in 4 rounds, median $9.3M
- 04
3 exits from the portfolio
What they do
- Type
- VC firm (from a list, unverified)
- Cheque size
- $1.0M – $7.0M as they say
- Stages
- SeedSeries ASeries BGrowthPre-IPO
- Sectors
- Network SecuritySecurityVenture Capital & Private Equity
- Based in
- St. Louis, United States
- Cold pitches
- Not stated
A website was listed for this organisation, but we could not confirm it belongs to the firm that wrote these cheques. Either the site never mentions them, or it turned out to be a different company sharing the name. We show neither it nor anything read from it. Tell us the right one.
The record
Every round we can evidence, newest first41 appearances
- 2019
1 round
- May
- 2018
2 rounds
- Nov
- Jan
- 2017
2 rounds
- Mar
- Mar
- 2015
5 rounds
- Oct
- Sept
- Aug
- Jun
- May
- 2014
4 rounds
- Oct
- Sept
- Jul
- May
- 2013
5 rounds
- Jun
- Jun
- Jun
- May
- Feb
- 2012
5 rounds
- Apr
- Mar
- Jan
- Jan
- Jan
- 2011
1 round
- Mar
- 2009
1 round
- Feb
- 2008
2 rounds
- May
- Jan
- 2007
4 rounds
- Nov
- Sept
- Jun
- Jun
- 2006
5 rounds
- Dec
- Nov
- Jul
- Jul
- Jan
- 2005
2 rounds
- Aug
- Feb
- 2004
2 rounds
- Dec
An announcement gives the size of the round, not the size of this investor's cheque: the only rounds that imply a cheque are those where they were the sole named investor.
The team
Named by the firm itself, on a filing, its Form ADV or its company registration4 named
BLBrian L ClevingerManaging Director of General PartneriFiling they signed
GJGreg JohnsonManaging Director of General PartneriFiling they signed
IBIlya B NykinManaging Director of General PartneriFiling they signed
JSJohn SteuartManaging Director of General PartneriFiling they signed
We also hold 9 people at this firm from the lists this database was built from: a weaker source than the filings, since a list does not say when a title ended. Login to see them.
What the register says
From the firm's own filings with the SEC, which it must file accurately by law
$2.8Mgross assets of its fundsOct 2026
Exemptreporting adviserventure or small private funds
- Legal name
- Prolog Ventures HL II, LLC
- SEC number
- CRD 170338
Exits from the portfolio
Companies it backed that were later bought or listed3 in all
EraGen BiosciencesBought by Luminex$34MJun 2011
DivergenceBought by MonsantoUndisclosedFeb 2011
ZystorBought by BioMarin Pharmaceutical$115MAug 2010
An exit counts when it came after the firm's first round in the company. From historical deal records.